State the magnetic force law for a straight current-carrying wire segment.

State the magnitude of force on a straight wire of length \(L\) carrying current \(I\) in a magnetic field.

When is the magnetic force on a straight current-carrying wire zero?

A \(0.40\,\mathrm{m}\) wire carries \(5.0\,\mathrm{A}\) perpendicular to \(0.20\,\mathrm{T}\). Find the force.

A \(0.80\,\mathrm{m}\) wire carries \(3.0\,\mathrm{A}\) at \(30^\circ\) to a \(0.50\,\mathrm{T}\) field. Find the force magnitude.

A wire feels \(0.12\,\mathrm{N}\) when \(0.30\,\mathrm{m}\) of it carries \(4.0\,\mathrm{A}\) perpendicular to the field. Find \(B\).

What direction vector is used for \(\vec L\) in \(\vec F=I\vec L\times\vec B\)?

A wire carries current east through a magnetic field pointing north. What is the force direction?

A wire carries current north through a magnetic field pointing east. What is the force direction?

Find the force per unit length on a wire carrying \(12\,\mathrm{A}\) perpendicular to \(0.050\,\mathrm{T}\).

Why does reversing the current reverse the force on a wire in the same magnetic field?

Why does a wire parallel to a magnetic field feel no magnetic force?

Derive \(F=ILB\sin\theta\) from the vector law for a wire.

A horizontal wire of length \(0.50\,\mathrm{m}\) and mass \(0.020\,\mathrm{kg}\) is perpendicular to a magnetic field of \(0.40\,\mathrm{T}\). What current is needed for magnetic force to support its weight?

A wire segment in a field carries \(2.0\,\mathrm{A}\). The force is \(0.30\,\mathrm{N}\) on \(0.50\,\mathrm{m}\) at \(90^\circ\). Find the field strength and state the unit.

A rectangular wire loop in a uniform magnetic field has two sides parallel to the field and two sides perpendicular. Which sides feel force?

Why can forces on opposite sides of a current loop produce torque even when net force is zero?

A wire carries current in \(+x\) and the magnetic field is in \(-z\). Find the force direction.

A wire carries conventional current upward. Electrons drift downward. Which direction should be used in the wire-force law?

Explain how the force on a current-carrying wire follows from the force on individual moving charges.